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JOURNAL OF FACULTY OF CIVIL ENGINEERING
INTERNATIONAL CONFERENCE
CONTEMPORARY ACHIEVEMENTS IN CIVILENGINEERING 25, 2014.y., pp. 325-330


ELASTIC-PLASTIC BUCKLING OF THIN-WALLED BEAMS
 
DOI: 10.14415/konferencijaGFS2014.043
UDC: 624.072.2
CC-BY-SA 4.0 license
Author : Majstorović, Dijana; Došenović, Milorad; Milašinović, Dragan D.
 
 Summary:
 This paper seeks to formulate and validate the generalised beam theory (GBT) for the buckling behaviour of aluminium and stainless steel thin-walled members. The analysis consists of calculation cross-section (local) and member (global) deformations and has been shown to be very efficient tool for analyzing local and global stability behaviour of thin-walled cold-formed steel (isotropic) and composite (orthotropic) members. In this work particular attention is paid to the need to define the stability problem in terms of one simple continuous rheological-dynamical modulus function. Verification of GBT, its unique features and capabilities are illustrated by the example of uniformly compressed rectangular plate of stainless steel.
 
 Keywords:
 Generalised beam theory, plastic bifurcation, rheological-dynamical modulus function, critical and failure stress